M. Ritter

activity

20012023

e^{+} e^{-} \to π^{+} π^{-} J / ψ

and Observation of a Charged Charmonium-like State at Belle

739 citations · 9k across the 235 of their papers we have counts for

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21 papers · 1 filter

hep-ex2019★ 2 cited

Study of $B \to p p ˉ π π$

K. Chu, M. -Z. Wang, I. Adachi +174

Using a data sample of $772 \times 1 0^{6}$ BB pairs collected on the $Υ (4 S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^{+} e^{-}$ collider, we report the observat…

hep-ex2019★ 46 cited

Search for an invisibly decaying $Z^{'}$ boson at Belle II in $e^{+} e^{-} \to μ^{+} μ^{-} (e^{\pm} μ^{\mp})$ plus missing energy final states

Belle II Collaboration, I. Adachi, P. Ahlburg +358

Theories beyond the standard model often predict the existence of an additional neutral boson, the $Z^{'}$ . Using data collected by the Belle II experiment during 2018 at the…

hep-ex2019★ 6 cited

Measurement of the charm-mixing parameter $y_{C P}$ in $D^{0} \to K_{S}^{0} ω$ decays at Belle

Belle Collaboration, M. Nayak, D. Cinabro +179

We report the first measurement of the charm-mixing parameter $y_{C P}$ in $D^{0}$ decays to the $C P$ -odd final state $K_{S}^{0} ω$ . The study uses the full Belle $e^{+} e^{-}$ annihila…

hep-ex2019★ 44 cited

Search for $B^{+} \to μ^{+} ν_{μ}$ and $B^{+} \to μ^{+} N$ with inclusive tagging

M. T. Prim, F. U. Bernlochner, P. Goldenzweig +191

We report the result for a search for the leptonic decay of $B^{+} \to μ^{+} ν_{μ}$ using the full Belle data set of 711 fb $^{- 1}$ of integrated luminosity at the $Υ (4 S)$ resonance.…

hep-ex2019★ 2 cited

Observation of the radiative decays of $Υ (1 S)$ to $χ_{c 1}$

P. Katrenko, I. Adachi, H. Aihara +166

We report the first observation of the radiative decay of the $Υ (1 S)$ into a charmonium state. The statistical significance of the observed signal of $Υ (1 S) \to γ χ_{c 1}$ is 6.3 sta…

hep-ex2019★ 236 cited

Measurement of $R (D)$ and $R (D^{*})$ with a semileptonic tagging method

The Belle Collaboration, G. Caria, P. Urquijo +188

The experimental results on the ratios of branching fractions $R (D) = B (B ˉ \to D τ^{-} ν ˉ_{τ}) / B (B ˉ \to D ℓ^{-} ν ˉ_{ℓ})$ and $\mathcal{R}(D^…

hep-ex2019★ 36 cited

Measurement of the integrated luminosity of the Phase 2 data of the Belle II experiment

Belle II Collaboration, F. Abudinén, I. Adachi +420

From April to July 2018, a data sample at the peak energy of the $Υ (4 S)$ resonance was collected with the Belle~II detector at the SuperKEKB electron-positron collider. This is the…

hep-ex2019

Experimental determination of the isospin of $Λ_{c} (2765)^{+} / Σ_{c} (2765)^{+}$

The Belle Collaboration, A. Abdesselam, I. Adachi +454

We report an experimental determination of the isospin of $Λ_{c} (2765)^{+} / Σ_{c} (2765)^{+}$ using 980 fb $^{- 1}$ data in the $e^{+} e^{-}$ annihilation around $s = 10.6$ GeV collected by…

hep-ex2019★ 11 cited

First measurement of the CKM angle $ϕ_{3}$ with $B^{\pm} \to D (K_{S}^{0} π^{+} π^{-} π^{0}) K^{\pm}$ decays

Belle Collaboration, P. K. Resmi, J. Libby +165

We present the first model-independent measurement of the CKM unitarity triangle angle $ϕ_{3}$ using $B^{\pm} \to D (K_{S}^{0} π^{+} π^{-} π^{0}) K^{\pm}$ decays, where $D$ indicates either a…

hep-ex2019★ 134 cited

Test of lepton flavor universality and search for lepton flavor violation in $B \to K ℓℓ$ decays

S. Choudhury, S. Sandilya, K. Trabelsi +220

We present measurements of the branching fractions for the decays $B \to K μ^{+} μ^{-}$ and $B \to K e^{+} e^{-}$ , and their ratio ( $R_{K}$ ), using a data sample of 711 $f b^{- 1}$ that…

hep-ex2019★ 38 cited

Search for $Ω (2012) \to K Ξ (1530) \to K π Ξ$ at Belle

Belle Collaboration, S. Jia, C. P. Shen +192

Using data samples of $e^{+} e^{-}$ collisions collected at the $Υ (1 S)$ , $Υ (2 S)$ , and $Υ (3 S)$ resonances with the Belle detector, we search for the three-body decay of the $Ω (2012)$ bar…

hep-ex2019★ 16 cited

Search for $X (3872)$ and $X (3915)$ decay into $χ_{c 1} π^{0}$ in $B$ decays at Belle

V. Bhardwaj, S. Jia, I. Adachi +190

The Belle experiment searched for the exotic states X(3872) and X(3915) decaying to χc1 π0 in B⁺ → χc1 π0 K⁺ decays and set upper limits on the product branching fractions.

hep-ex2019★ 4 cited

Search for $B^{0} \to X (3872) γ$

Belle Collaboration, P. -C. Chou, P. Chang +191

We report the results of a search for the decay $B^{0} \to X (3872) (\to J / ψ π^{+} π^{-}) γ$ . The analysis is performed on a data sample corresponding to an integrated luminosity of $711\,{…

hep-ex2019★ 31 cited

Observation of a new structure near 10.75 GeV in the energy dependence of the $e^{+} e^{-} \to Υ (n S) π^{+} π^{-}$ ( $n = 1, 2, 3$ ) cross sections

R. Mizuk, A. Bondar, I. Adachi +177

We report a new measurement of the $e^{+} e^{-} \to Υ (n S) π^{+} π^{-}$ ( $n = 1, 2, 3$ ) cross sections at energies from 10.52 to 11.02 GeV using data collected with the Belle detector at the KEKB as…

hep-ex2019★ 68 cited

Measurement of $R (D)$ and $R (D^{*})$ with a semileptonic tagging method

The Belle Collaboration, A. Abdesselam, I. Adachi +461

We report a measurement of the ratios of branching fractions $R (D) = B (B ˉ \to D τ^{-} ν ˉ_{τ}) / B (B ˉ \to D ℓ^{-} ν ˉ_{ℓ})$ and $\mathcal{R}(D^{…

hep-ex2019★ 2 cited

Measurement of branching fraction and final-state asymmetry for the $B ˉ^{0} \to K_{S}^{0} K^{\mp} π^{\pm}$ decay

Belle Collaboration, Y. -T. Lai, I. Adachi +184

We report a measurement of the branching fraction and final-state asymmetry for the $B ˉ^{0} \to K_{S}^{0} K^{\mp} π^{\pm}$ decays. The analysis is based on a data sample of 711 $…

hep-ex2019★ 33 cited

First measurements of absolute branching fractions of the $Ξ_{c}^{+}$ baryon at Belle

Belle Collaboration, Y. B. Li, C. P. Shen +192

We present the first measurements of the absolute branching fractions of $Ξ_{c}^{+}$ decays into $Ξ^{-} π^{+} π^{+}$ and $p K^{-} π^{+}$ final states. Our analysis is based on a data set of $(77…

hep-ex2019★ 170 cited

Test of lepton-flavor universality in $B \to K^{*} ℓ^{+} ℓ^{-}$ decays at Belle

Belle Collaboration, S. Wehle, I. Adachi +179

We present a measurement of $R_{K^{*}}$ , the branching fraction ratio $B (B \to K^{*} μ^{+} μ^{-})$ / $B (B \to K^{*} e^{+} e^{-})$ , for both charged and neutral $B$ meso…

hep-ex2019★ 35 cited

Measurement of the $D^{-}$ polarization in the decay $B^{0} \to D^{-} τ^{+} ν_{τ}$

Belle Collaboration, A. Abdesselam, I. Adachi +457

We report the first measurement of the $D^{*-}$ meson polarization in the decay $B^{0} \to D^{*-} τ^{+} ν_{τ}$ using the full data sample of 772 $\times 1 0^{6}$ $B B ˉ$ pairs recorded…

hep-ex2019★ 8 cited

Evidence for $B^{+} \to h_{c} K^{+}$ and observation of $η_{c} (2 S) \to p p ˉ π^{+} π^{-}$

Belle Collaboration, K. Chilikin, I. Adachi +173

A search for the decays $B^{+} \to h_{c} K^{+}$ and $B^{0} \to h_{c} K_{S}^{0}$ is performed. Evidence for the decay $B^{+} \to h_{c} K^{+}$ is found; its significance is $4.8σ…

hep-ex2019★ 45 cited

Global Decay Chain Vertex Fitting at B-Factories

J. -F. Krohn, P. Urquijo, F. Abudinén +17

We present a particle vertex fitting method designed for B factories. The presented method uses a Kalman Filter to solve a least squares estimate to globally fit decay chains, as o…

Study of B→ppˉ​ππ

Search for an invisibly decaying Z′ boson at Belle II in e+e−→μ+μ−(e±μ∓) plus missing energy final states

Measurement of the charm-mixing parameter yCP​ in D0→KS0​ω decays at Belle

Search for B+→μ+νμ​ and B+→μ+N with inclusive tagging

Observation of the radiative decays of Υ(1S) to χc1​

Measurement of R(D) and R(D∗) with a semileptonic tagging method

Measurement of the integrated luminosity of the Phase 2 data of the Belle II experiment

Experimental determination of the isospin of Λc​(2765)+/Σc​(2765)+

First measurement of the CKM angle ϕ3​ with B±→D(KS0​π+π−π0)K± decays

Test of lepton flavor universality and search for lepton flavor violation in B→Kℓℓ decays

Search for Ω(2012)→KΞ(1530)→KπΞ at Belle

Search for X(3872) and X(3915) decay into χc1​π0 in B decays at Belle

Search for B0→X(3872)γ

Observation of a new structure near 10.75 GeV in the energy dependence of the e+e−→Υ(nS)π+π− (n=1,2,3) cross sections

Measurement of R(D) and R(D∗) with a semileptonic tagging method

Measurement of branching fraction and final-state asymmetry for the Bˉ0→KS0​K∓π± decay

First measurements of absolute branching fractions of the Ξc+​ baryon at Belle

Test of lepton-flavor universality in B→K∗ℓ+ℓ− decays at Belle

Measurement of the D∗− polarization in the decay B0→D∗−τ+ντ​

Evidence for B+→hc​K+ and observation of ηc​(2S)→ppˉ​π+π−

Global Decay Chain Vertex Fitting at B-Factories

Study of $B \to p p ˉ π π$

Search for an invisibly decaying $Z^{'}$ boson at Belle II in $e^{+} e^{-} \to μ^{+} μ^{-} (e^{\pm} μ^{\mp})$ plus missing energy final states

Measurement of the charm-mixing parameter $y_{C P}$ in $D^{0} \to K_{S}^{0} ω$ decays at Belle

Search for $B^{+} \to μ^{+} ν_{μ}$ and $B^{+} \to μ^{+} N$ with inclusive tagging

Observation of the radiative decays of $Υ (1 S)$ to $χ_{c 1}$

Measurement of $R (D)$ and $R (D^{*})$ with a semileptonic tagging method

Experimental determination of the isospin of $Λ_{c} (2765)^{+} / Σ_{c} (2765)^{+}$

First measurement of the CKM angle $ϕ_{3}$ with $B^{\pm} \to D (K_{S}^{0} π^{+} π^{-} π^{0}) K^{\pm}$ decays

Test of lepton flavor universality and search for lepton flavor violation in $B \to K ℓℓ$ decays

Search for $Ω (2012) \to K Ξ (1530) \to K π Ξ$ at Belle

Search for $X (3872)$ and $X (3915)$ decay into $χ_{c 1} π^{0}$ in $B$ decays at Belle

Search for $B^{0} \to X (3872) γ$

Observation of a new structure near 10.75 GeV in the energy dependence of the $e^{+} e^{-} \to Υ (n S) π^{+} π^{-}$ ( $n = 1, 2, 3$ ) cross sections

Measurement of $R (D)$ and $R (D^{*})$ with a semileptonic tagging method

Measurement of branching fraction and final-state asymmetry for the $B ˉ^{0} \to K_{S}^{0} K^{\mp} π^{\pm}$ decay

First measurements of absolute branching fractions of the $Ξ_{c}^{+}$ baryon at Belle

Test of lepton-flavor universality in $B \to K^{*} ℓ^{+} ℓ^{-}$ decays at Belle

Measurement of the $D^{-}$ polarization in the decay $B^{0} \to D^{-} τ^{+} ν_{τ}$

Evidence for $B^{+} \to h_{c} K^{+}$ and observation of $η_{c} (2 S) \to p p ˉ π^{+} π^{-}$